Hey everyone, I think I have a faulty e-manage and wanted some reassurance that I am right.

Here is what is going on. 8 is greddy turboed. Ran great once i got a good map, I installed colder plugs and was running the 07_07 map that is on the site here. Car was perfect, strong and fast. a/f always went to the rich side (11s under boost) so i knew that the emange was doing its thing.

Now, the temp went down a few degrees here, was in the 90s now in the 80s. Car started hestitating, jumping, stuttering when boost came on. I thought at first the map was not tuned for the ambient temperature. Temp went up and the 8 ran a little better but not like it did. Then I thought maybe the plugs were fouled so I pulled them tonight, they were brown as they always have been, cleaned them and re-gapped them. Still does it. I have the Greddy Profec e-01 and did a trace to see what the emanage was doing at different boost pressures/rpms.

The emanage is not altering the fuel at all. Under boost I am going lean, like 16 and 17! When not boosting, the car runs great.

So here is my theory, the 8 gets boost, the emanage does not alter the fuel, so of course it goes lean and the stock ecu retards the timing to save the engine thus the hestiation and jumping.

Now will it do any good to reset the emanage (how?) or the stock ecu? Or is it pretty clear the emanage needs replacing?

Thanks guys!

Chris

 

Well, you can re-initialize the emanage using the e-01. You can also re-load the firmware, although I don't know if that's doing anything. Are you getting any error codes flashing on the emanage? guess you already checked the wiring and the maps to see if they got corrupted somehow...


-MD

 

Yeah, I suspect a corrupted map.
Hook up your support tool and try to connect to the emanage. The map it's running "should" show up. If it doesn't, then try an "import map" and see if it shows up then. Verify the cells are correct.

If the map does show up, then try to reset the battery. (disconnect negative battery terminal and reconnect after 15secs).

 

Have you checked you boost sensor connections? Is your emanage in the glove box? My cable was being pulled when I opened the glove box. You might want to check that you connector is fully engaged as it sound like the unit is not seeing the boost to make the fuel input. I like to elimintate the simply things before diving in too deep.

Just a thought

 

Thanks for the help guys, here is the rest of the story since last night.

profec e-01 connects to the emanage and when I export a map, it sends it and seems to be fine no errors so I think I am okay there, I will check it tomorrow evening with the laptop though. Problem started a little before the profec though.

I finally thought maybe it was the fuel trim everyone was talking about, so I disconnected the negative cable for like thrity minutes last night! Car runs better but no like before this trouble, a little jumpy in spots so I figured let the fuel trim correct that and i will be good for a while then reset again etc. etc. well tonight, sometimes when boost hits, the a/f goes richer like it should, car drives great like it did. then sometimes boost comes on and it goes lean again. I have disconnected the battery again and just left it disconnected for the night, lol. just being fustrated with the stock ecu and emanage.

So I will check the connections again, I am wondering if maybe the boost sensor is bad though, i have the spare from the profec install, think it will make any difference to install it? worth a shot at this point, i think.

Just to affirm that i am not a dummy, the boost sensor goes to the profec control box now, not the emanage as before when there was no profec right?

I am thinking that i will be following adrian soon and getting the interceptor. I hate this emanage right now!

Thanks for the help guys!

Chris

 

Your a dummy. :D
The boost sensor does go to the profec now BUT you need another cable (not included) to go from the e-01 to the emanage. You need to get the pressure sensor harness or splice the boost sensor that came with the e-01 into the one you got with the greddy kit. It's listed on greddy's site. and sold at mohdparts.com

This cable sends the boost signal from the e-01 to the emanage. So you have nothing connected to the emanage boost input (yellow plug)?

 

No, i don't, I must be a dummy! The profec is connected to the emanage via the usb type cable where you connect the laptop, but not by a pressure sensor plug. So maybe that is my problem now, thanks for the input, I assumed that the profec would pass all the parameters through the usb cable to the emanage.

 

Nope, usb cable is just for loading/ modifying maps. Hope your back to boosting soon.

 

Thanks guys, I am finally back among the zoom zoom pssst! My problem was two part actually. The first was the ltft and stft, I had not read anything about it before until last week so i badly needed to reset the ecu, tried by the tripometer way and that made no difference in the 8 so I figured that was not it. I was wrong. I disconnect battery, erase ecu and that was taken care of. Now in the mean time, I put the profec in and did the whole stupid thing with the boost sensor to the profec and not having one to the emanage. Disconnected from the profec today and connected back to the emanage, now, i am richer under boost like it used to be! Still waiting on the sensor harness from modparts, should be here later this week and I will get the profec squared away. So thanks yet again guys, this place is GREAT!